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Category: Statistical distribution
Subcategories: Power , clinical trials
Online calculation for sample size, power or the minimal detectable difference for parallel studies, crossover studies, or studies to find associations between variables, where the dependent variable is Success or Failure, a Quantitative Measurement, or a time to an event such as a survival time. Registration not required.
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Category: Statistical distribution
Subcategories: Random , clinical trials
Research Randomizer is a closed-source, clinical randomization web service, It can be used for random sampling, random assignment to treatment groups, and block randomization. This randomization service has an excellent tutorial with five sample randomization scenarios for random sampling, random assignment, random block assignment, generating random numbers in a specified range, and random ordering of a set of items, Registration not required.
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Category: Statistical distribution
Subcategories: Random , clinical trials

